Phonon Spectrum in a Nanoparticle Mechanically Coupled to a Substrate

Kelly R. Patton; Michael R. Geller

doi:10.1016/s0022-2313(01)00358-1

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Phonon Spectrum in a Nanoparticle Mechanically Coupled to a Substrate

Kelly R. Patton·Michael R. Geller

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Abstract

We calculate the vibrational density-of-states in an insulating nanoparticle that is in weak mechanical contact with a semi-infinite substrate. The work is motivated by a recent experiment by Yang et al., where the low-energy phonon density-of-states of Y2O3 nanoparticles doped with Eu was measured. Preliminary results presented here, based on the conventional quasiparticle-pole approximation for the phonon propagator, are in reasonable agreement with experiment.

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Kelly R. Patton, Michael R. Geller. 2001-06-26. Phonon Spectrum in a Nanoparticle Mechanically Coupled to a Substrate. https://doi.org/10.1016/s0022-2313(01)00358-1

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